@mention autosuggest

I would love to have an @mention autosuggest feature in the topic reply/create textarea. You probably know how this would work but quickly, when you type ‘@’ it would create a popup of the names of users and filters based on the characters after the ‘@’. Maybe it doesn’t even spawn until you have typed in at least a character or two.

There is a BuddyPress plugin that does exactly this: BP Labs. But it does not extend to the BBPress forums.